过载极曲线及其在比较飞机机动性中的应用

战斗机机动性是其性能指标的重要组成部分之一，在评估战斗机作战能力和设计方案中经常使用，与传统性能评估指标相比，过载极曲线在一张图上综合反映了飞机的机动特性，因此更加直观和易用，讨论了过载极曲线，稳定盘旋过载包线的原理，计算过程及其在评估，比较飞机机动性方面的应用，并与传统机动性指标进行了对比，计算并比较了一架典型的第二代战斗机和一架典型第三代战斗机的过载极曲线。

The Polar Plot of Load Factor and Its Applications in Comparing Fighter's Maneuverability

Maneuverability is one of the most important performances of a fighter. It is useful in evaluating project design and combat ability. Compared with traditional guideline, this polar plot of load factor can fully describe maneuverability in one figure. The polar plot of load factor is more intuitive and wieldy. Firstly, the concept and process of computing the polar plot of load factor are discussed in this paper. Then applications in evaluating and comparing fighter's maneuverability are given. Also the difference between traditional guideline and the polar plot of load factor is provided. Finally, it gives an example of computing and comparing the polar plot of load factor of a typical second generation fighter and a typical third generation fighter.